Scraper device for disk drills.



o. G. RIBsKE, T. BRENNAN, .13., s. H PHELPS & E. R. BEEM AN;

SGRAPEB DEVICE FOR DISK DRILLS.

APPLICATION FILED NOV. 9, 1909.

Patented Nov. 15

Wiimmo and THOMAS BRENNAN,

Park, county of. Hennepm, and State ot Unites srnirns one GEDRGE RIESKE Ann (memes BRENNAN, on sat. Lo 71s PARK, AND

H. PHELPS AND EDT/VIN R. BEEIEAN, Q13 llIINNEA-IOLIS, MIIQNESOTA, ASSIGNQEG 1 3 MONI'IUB DRILL GDI/ PANY, A CORPORATION OF MINNESOTA.

$CRAPER DEVICE FOR DISK DRILLS.

stance.

Implication filed November 9, 1909; Serial 1%. 522 ,6111

To all whom it may concern. Be 1t known that We, Or'ro G. Rinsnn on, ot St. LOULS' Minnesota, and SPENCER H. PHELPS -and EDWIN R. BEEMAN, ol.Miimeapolis, county of Hennepin, and State. ofMinnesota, have jointly invented a newand useful Improvement in Scraper Devices for Disk Drills, of which the following is a specification.

This invention relates to grain drills in 1 which the furrows to receive the grain, are

' pressure against the outer faces of formed by opening-disks, and the invention has special reference to the scraper device, which in machines of this type consists use ally of. two scraper blades held by spring the disks, and acting" as the disks are rotated to dislodge any adhering soil and keep the disks clean. 1

The present invention consists of various improvements inscraper devices of this character, and is directed more .particularly to the form of and manner of mounting the scraper holders and scraper arms to insurea close yielding contact of the edge of the blades against the face of the disks, notwithstanding any' unevenness or irregularities that may exist in the disks rotation.

The invention consists also in improved means for attaching the scraper blades to their supporting arms, whereby the blades may be readily removed. and reversed to bring a fresh surface or edge in contact with the disks when the blades become Worn.

, In the accompanying drawings:Figure 1 is a side elevation ofa pair of disk openers and the attached boot oi; frame. lnwing, our

-in'nroved scramerdevice 'a'nlied thereto.

Fig. 2 is a top plan view of the same. Fig. 3 IS a vertical sectional elevation on an enlarged scale on the line rP-a of Fig. 2. Fig.

. 4 is a section on the line Z' Z or" Fig.1,

showing the manner of attaching thescraper blade to its arm." Fig. 5 IS a sm'nlarwrew illustrating'how the blade is detached for reversal.

Referring to the drawingsz -Our im- Specification of Letters Patent.

' proved scraper devicecomprises -air of scraper blades 1 and 2, arms l, L -d to svlncl'i the blades are connected, or d holders 5 and 6 in which the arms are mounted, the holders being so sustained bya boot or frame 7 thatthe blades will act on the. outer fa ces of the two disks 8 and 9 respectively.

The holders 5 7 form, and provided with longitudinal hear ing sockets, in .which thetor "ard ends of the arms are loosely-included to turn or swivel on a longitudinal as and each ot the holders formed W :1 depending stud 10, mounted loosely in hearing open iug'rsin lugs 11 and 12 rejecting laterally"- the boot, the coustruction being such that "the holders 1 ay rock to and from the disks on axes extending' transversely with reference to the axes on which the arms swivel. As a result. the scraper blades are capable oil? two motions, one a bodily motion to and from the ill. and the other a tippingor rocking motion, the blades being normally held yieldingly and flatly against the faces of the disks by means of a spiral spring 13 lilUlW-llftl between llle l l'n'ward ends of the. holders and tending by its expansion, to urge the opposite ends of the holders in ard and consequently the blades againstthe disks. These two movements of the blades" -'be subieetto the action of the spri cm .i the blades to contact closely and tlally and inn yielding manner wilh the surface of the disks, and compel lhenrto follow with certainty any unevenness in the rotation of the disks. due to jar. strain. or other causes. Ellis-action of the blades is of great importauce and advantage in working in tough or sticky soils, as it e'li'ectuully prevents the soil. which in some localities carries wiry fibers, from adhering to the surface of the disks, and

and the disks which would scraperblades inoperative.

In order thatthe arms may be prevented from escaping endwise from the holders and render the and (3 are elongated in thereby avoids the liability -ofthe fibers \vorkingin between the blades be given support therein, while at the same time be capable of the swiveling action de scribed, the holders are each provided with a confining ingcr 1' n'igagingloosely in a. i'ieriphoral groove in the arm and at their jtorwaij'd ends the holders are termed each with a shouldlzn' or abutment it against which the ends of the arms bear, tl x'nonts thus acting to receive the mic-thrust. of the blades caused by the ontact: of the adhering )il thcreivitl The blades are comiected with the arms in such manner that they may be detached and reversed side for side, when by reason of th ncrement of the disks against the edge oi. the blades, the latter become worn and .t'a'l to keep the disks clean. To effect this result the blade, as shown more particularly in l igs. i and 5, is provided with two slots or openings and 21 arranged side side and. leaving between them. connecting bar and the end of the arm' is flattened and formed with an otl'set portion'QS and a terminal linger 24*. The parts thus formed are adapted to he firmly hut dctachably intcrlockciil, as shown in. big. 4:, where it will be seen that the otlsct. portion boars at the side of the cross-ar 22 of the bladc, with the body of the arm and terminal linger hearing on the opposite side of the blade adjacent .the slots 20 and re,- spcctivcly, the parts being WCl' ed tightly in this position and held by in inherent spring of the material. The form and relation of the slots and arm are such that. when the parts are thus firmly interloclwd, there. will beisutticicnt clearance between the ends of tho'slots and ends o l the ollsct portioinas at 25 and 2G, to permit the blade to be shifted ondwise for enough to tree the end of finger 24, which action will release the blade. may then. be removed by tipping it to the position of Fin. 5 to pass the finger through the slot 90, after which the blade may be entirely removed. It may then be reversed side for side to bring the op 'iositc.

.c( go against the disk, and interlocked with the arm by the reversal of the operations just described, the slot 21 being tirst passed over the end of the arm to the position of Fig. then slot 20 passed over the finger 24, and finally the blade torccd cndwiso to the position of Fig. 4, thereby causing the finger to'engage at one side of the blade and the offset on the opposite, and in this manner binding the parts rigidly but detachablytogethcr. It is understood that; to release the blade for removal, above described, it will be necessary to strike the to]; ward edge of the same forcibly in order to shift it endwise.

In' the accompanying drawings, we have illustrated our invention, and in the specification described the same in the form andl ant-race manner which in actual practice have been found to answer in a satisfactory manner the results to be attained, but we Wish to be understood that the invention is not limited to any particular or specific details except'in so tar as such tied in the claims.

Having thus described our invention, what we claim and desire to secure by Letters Patcnt oil the United States, is

i. In con'ibinatiou with the frame and opening disks, scraper arm holders pivoted between their ends to the frame on opposite sides of the latter and adapted to rock to and from the disks, said holders being provided with longitudinal bearing. sockets, scraper arms mounted at their forward ends in said sockets and movable therein around the longitudinal axes of the arms, means on the arms and holders adapted to retain the same in permanent engagement, scraper blades connected to the rear ends of said arms in fixed relations thereto, and a spring mounted between the forward ends of the scraper arm holders and'acting to maintain the scraper blades yicldingly in contact With the disks.

2. In. a disk scraper, the combination with a scrapcr-arrn holder provided with a bearing socket and a confining finger, of ascraper arm mounted in the bearing socket and formed with a peripheral groove in which the confining finger loosely engages, and a scraper blade carried by the arm.

In a disk scraper, the combination with a. scraper blade orovided. with a plurality of alined slots and a connecting portion thorebctwecn, of a scraper arm extending through said slots from one side to the other and engaging said-connecting portion for interlocking detachably with said blade, the said slots being elongated in the direction of the longitudinal axis of the arm to admit of the engagement or disengagement of the parts.

at. In a disksc a per, the combination with a scraper blade provided with a plurality of alincd slots and a connecting portion thercbetwccn, of a scraper arm extending through said slots from one side to the other and engaging said connecting portion for interlocking dctachably with said blade, and bearing with spring pressure on opposite sides of said blade.

In a disk scraper, the combination of a scraper blade provided with alincd elongated slots, :1. scraper arm adapted at its end to be passed through .said slots and provided with anoti set portion and a terminal finger acting by cndwise movement of the blade, to forcibly engage the latter respectively on opposite sides, and also to disengage the same. V

6. In a disk scrapcr,the combination with limitations are 'speciascraper blade, of a scraper arm extending set our' hands this 25th day of Ottober 1909, through said. blade from oneside to the 1n the presence oftwo witnesses.

other and detachably interlocked therewith 4 and coacting means on the blade and arni 5 so formed relatively that said blade and SPENCER H Z Z arm may be'separa ted, first by an endwise EDWIN R AN relative movement to release them, and sec-. 0nd by a tipping movement to permit "their Witnesses: separation. F. S. PRESTON,

10 In testimony whereof wehave hereunto LOUIS W. FULLER. 

